diff --git a/.github/ubuntu/exasol.sh b/.github/ubuntu/exasol.sh
index 1529d335..4f9d4c06 100755
--- a/.github/ubuntu/exasol.sh
+++ b/.github/ubuntu/exasol.sh
@@ -30,5 +30,5 @@ sudo tar -xzf EXAplus-24.2.1.tar.gz                  -C /opt/exasol --strip-comp
 
 # Add to the path.
 if [[ -n "$GITHUB_PATH" ]]; then
-    echo "/opt/exasol" >> $GITHUB_PATH
+    echo "/opt/exasol" >> "$GITHUB_PATH"
 fi
diff --git a/.github/ubuntu/firebird.sh b/.github/ubuntu/firebird.sh
index 90a968f2..de1e7cd1 100755
--- a/.github/ubuntu/firebird.sh
+++ b/.github/ubuntu/firebird.sh
@@ -9,6 +9,6 @@ if [ -z "$SKIP_DEPENDS" ]; then
 fi
 
 # Tell DBD::Firebird where to find the libraries.
-if [[ ! -z "$GITHUB_ENV" ]]; then
-    echo "FIREBIRD_HOME=/usr" >> $GITHUB_ENV
+if [[ -n "$GITHUB_ENV" ]]; then
+    echo "FIREBIRD_HOME=/usr" >> "$GITHUB_ENV"
 fi
diff --git a/.github/ubuntu/oracle.sh b/.github/ubuntu/oracle.sh
index d8942b8d..a258a06a 100755
--- a/.github/ubuntu/oracle.sh
+++ b/.github/ubuntu/oracle.sh
@@ -28,15 +28,15 @@ bsdtar -C /opt/instantclient --strip-components 1 -zxf "instantclient-basic-linu
 bsdtar -C /opt/instantclient --strip-components 1 -zxf "instantclient-sqlplus-linux.x64-${version}.zip"
 bsdtar -C /opt/instantclient --strip-components 1 -zxf "instantclient-sdk-linux.x64-${version}.zip"
 
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/opt/instantclient" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/opt/instantclient" >> "$GITHUB_PATH"
 fi
 
-if [[ ! -z "$GITHUB_ENV" ]]; then
-    echo "ORACLE_HOME=/opt/instantclient" >> $GITHUB_ENV
+if [[ -n "$GITHUB_ENV" ]]; then
+    echo "ORACLE_HOME=/opt/instantclient" >> "$GITHUB_ENV"
     if [[ -z "$LD_LIBRARY_PATH" ]]; then
-        echo "LD_LIBRARY_PATH=/opt/instantclient" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=/opt/instantclient" >> "$GITHUB_ENV"
     else
-        echo "LD_LIBRARY_PATH=/opt/instantclient:$LD_LIBRARY_PATH" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=/opt/instantclient:$LD_LIBRARY_PATH" >> "$GITHUB_ENV"
     fi
 fi
diff --git a/.github/ubuntu/pg.sh b/.github/ubuntu/pg.sh
index 8f35bd05..0b9d2f31 100755
--- a/.github/ubuntu/pg.sh
+++ b/.github/ubuntu/pg.sh
@@ -9,6 +9,6 @@ curl -O https://salsa.debian.org/postgresql/postgresql-common/-/raw/master/pgdg/
 sudo sh apt.postgresql.org.sh -i -t -v $PGVERSION
 sudo pg_createcluster --start $PGVERSION test -p 5432 --locale=C -- -A trust -E UTF8
 
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/usr/lib/postgresql/$POSTGRES/bin" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/usr/lib/postgresql/$POSTGRES/bin" >> "$GITHUB_PATH"
 fi
diff --git a/.github/ubuntu/snowflake.sh b/.github/ubuntu/snowflake.sh
index 667bd905..ff10a3ce 100755
--- a/.github/ubuntu/snowflake.sh
+++ b/.github/ubuntu/snowflake.sh
@@ -22,14 +22,14 @@ sudo mv /opt/snowflake/ErrorMessages/en-US /opt/snowflake/lib/
 # Install, update, and configure SnowSQL.
 sed -e '1,/^exit$/d' snowsql.bash | sudo tar -C /opt/snowflake -zxf -
 /opt/snowflake/snowsql -Uv
-echo "[options]\nnoup = true" > /opt/snowflake/config
+printf "[options]\nnoup = true\n" > /opt/snowflake/config
 
 # Add to the path.
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/opt/snowflake" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/opt/snowflake" >> "$GITHUB_PATH"
 fi
 
 # Tell SnowSQL where to find the config.
-if [[ ! -z "$GITHUB_ENV" ]]; then
-    echo "WORKSPACE=/opt/snowflake" >> $GITHUB_ENV
+if [[ -n "$GITHUB_ENV" ]]; then
+    echo "WORKSPACE=/opt/snowflake" >> "$GITHUB_ENV"
 fi
diff --git a/.github/ubuntu/sqlite.sh b/.github/ubuntu/sqlite.sh
index 2b07be07..74ca1820 100755
--- a/.github/ubuntu/sqlite.sh
+++ b/.github/ubuntu/sqlite.sh
@@ -6,7 +6,7 @@ SQLITE=${SQLITE:=${1:-3.40.1}}
 echo "Instaling SQLite $SQLITE"
 
 # Convert to the SQLITE_VERSION_NUMBER format https://sqlite.org/c3ref/c_source_id.html
-SQLITE=$(perl -e 'my @v = split /[.]/, shift; printf "%d%02d%02d%02d\n", @v[0..3]' $SQLITE)
+SQLITE=$(perl -e 'my @v = split /[.]/, shift; printf "%d%02d%02d%02d\n", @v[0..3]' "$SQLITE")
 
 # Since 3.7.16.1, the URL includes the year in the path.
 # 3.18.2, 3.18.1, 3.9.3, and 3.7.11 missing.
@@ -42,20 +42,20 @@ gcc -shared -o libsqlite3.so -fPIC sqlite3.o -ldl -lpthread
 # Hand-build DBD::SQLite against the version of SQLite just installed.
 DIST=$(cpanm --info DBD::SQLite) # ISHIGAKI/DBD-SQLite-1.70.tar.gz
 URL=https://cpan.metacpan.org/authors/id/${DIST:0:1}/${DIST:0:2}/$DIST
-curl -o dbd.tar.gz $URL
+curl -o dbd.tar.gz "$URL"
 tar zxvf dbd.tar.gz --strip-components 1
 perl -i -pe 's/^if\s*\(\s*0\s*\)\s\{/if (1) {/' Makefile.PL
 perl Makefile.PL SQLITE_INC=/opt/sqlite SQLITE_LIB=/opt/sqlite
 make && make install
 
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/opt/sqlite" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/opt/sqlite" >> "$GITHUB_PATH"
 fi
 
-if [[ ! -z "$GITHUB_ENV" ]]; then
+if [[ -n "$GITHUB_ENV" ]]; then
     if [[ -z "$LD_LIBRARY_PATH" ]]; then
-        echo "LD_LIBRARY_PATH=/opt/sqlite" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=/opt/sqlite" >> "$GITHUB_ENV"
     else
-        echo "LD_LIBRARY_PATH=/opt/sqlite:$LD_LIBRARY_PATH" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=/opt/sqlite:$LD_LIBRARY_PATH" >> "$GITHUB_ENV"
     fi
 fi
diff --git a/t/exasol.t b/t/exasol.t
index edd41443..392b7e0f 100644
--- a/t/exasol.t
+++ b/t/exasol.t
@@ -417,18 +417,32 @@ $uri = URI->new(
     $ENV{EXA_URI} ||
     'db:dbadmin:password@localhost/dbadmin'
 );
-my $err = try {
-    $exa->use_driver;
-    $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
-        PrintError  => 0,
-        RaiseError  => 0,
-        AutoCommit  => 1,
-        HandleError => $exa->_error_handler,
-    });
-    undef;
-} catch {
-    $_;
-};
+my $err;
+for my $i (1..30) {
+    $err = try {
+        $exa->use_driver;
+        $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
+            PrintError  => 0,
+            RaiseError  => 0,
+            AutoCommit  => 1,
+            HandleError => $exa->_error_handler,
+        });
+        undef;
+    } catch {
+        $_;
+    };
+
+    if ($err) {
+        diag "DBI::state: ", ($DBI::state || ''), "\nMessage: ", $err->message, "\nOrig: ", $err->previous_exception;
+        last;
+    }
+    # Sleep if it failed but Vertica is still starting up.
+    # SQL-57V03: `failed: FATAL 4149:  Node startup/recovery in progress. Not yet ready to accept connections`
+    # SQL-08001: `failed: [Vertica][DSI] An error occurred while attempting to retrieve the error message for key 'VConnectFailed' and component ID 101: Could not open error message files`
+    last unless $err && (($DBI::state || '') eq '57V03' || $err->message =~ /VConnectFailed/);
+    sleep 1 if $i < 30;
+}
+
 
 DBIEngineTest->run(
     class             => $CLASS,